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We may be hearing a lot about Mars, especially with the Mars One project underway, but did you know that the Red Planet is only half the size of Earth? It's also less dense than Earth, having about 15% of Earth's volume and 11% of the mass. Its surface area is only slightly less than the total area of Earth's dry land. Continue reading for more fascinating things about Earth that may surprise you.

This entry was posted on 10/02/2013 02:00am and is filed under Infographics, Science, Space .
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